公开(公告)号：US06738184B2

公开(公告)日：2004-05-18

申请号：US09949873

申请日：2001-09-12

申请人： Etsuko Hayashi ,  Yasushi Sugaya ,  Yoshihito Onoda ,  Keiko Sasaki

发明人： Etsuko Hayashi ,  Yasushi Sugaya ,  Yoshihito Onoda ,  Keiko Sasaki

IPC分类号： H04B1012

CPC分类号： H01S3/06754 ,  H01S3/094011

摘要： Optical signals (multi-wavelength light) are guided to an EDF. The EDF is supplied with pump light generated by a first and a second pump light sources. Dummy light is generated by a dummy light source and supplied to the EDF. The wavelength of the dummy light is shorter than a wavelength range in which the optical signals are allocated.

摘要翻译： 光信号（多波长光）被引导到EDF。 EDF被提供有由第一和第二泵浦光源产生的泵浦光。 虚拟光由虚拟光源产生并提供给EDF。 虚拟光的波长比分配光信号的波长范围短。

公开(公告)号：US07843631B2

公开(公告)日：2010-11-30

申请号：US11859842

申请日：2007-09-24

申请人： Miki Onaka ,  Hideaki Sugiya ,  Yasushi Sugaya ,  Etsuko Hayashi

发明人： Miki Onaka ,  Hideaki Sugiya ,  Yasushi Sugaya ,  Etsuko Hayashi

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H01S3/1301 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/1305 ,  H04B10/296

摘要： The present invention relates to an apparatus for controlling a gain of an optical amplifier, and the apparatus comprises a target gain calculating unit for calculating, as a target gain for an optical amplifier, a value obtained by increasing or decreasing a gain (output) of signal light as the number of wavelengths of wavelength-multiplexed signal light decreases, and a control signal outputting unit for outputting a control signal to the optical amplifier so as to amplify the wavelength-multiplexed signal light with the target gain calculated by the target gain calculating unit. This promptly suppresses a fluctuation of signal light level, particularly, a fluctuation of output light power of an optical amplifier stemming from a variation of the number of wavelengths of wavelength-multiplexed signal light.

摘要翻译： 本发明涉及一种用于控制光放大器的增益的装置，该装置包括：目标增益计算单元，用于计算通过增加或减少增益（输出）获得的值作为光放大器的目标增益 波长多路复用信号光的波长数的信号光减少;以及控制信号输出单元，用于向光放大器输出控制信号，以便以目标增益计算的目标增益放大波分复用信号光 单元。 这迅速地抑制信号光电平的波动，特别是由波长多路复用信号光的波长数的变化导致的光放大器的输出光功率的波动。

公开(公告)号：US20100157416A1

公开(公告)日：2010-06-24

申请号：US12659027

申请日：2010-02-23

申请人： Yasushi Sugaya ,  Etsuko Hayashi ,  Masato Nishihara

发明人： Yasushi Sugaya ,  Etsuko Hayashi ,  Masato Nishihara

IPC分类号： H01S3/30

CPC分类号： G02B6/264 ,  H01S3/005 ,  H01S3/0078 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/2916

摘要： In an optical transmission system according to one aspect of the present invention, for transmitting a WDM light from a transmission station to a reception station, utilizing a Raman amplifier, the Raman amplifier comprises: an optical amplification medium; a pumping light source generating a plurality of pumping lights having wavelengths different from each other; an optical device introducing the plurality of pumping lights to the optical amplification medium; and control means for controlling the pumping light source, the transmission station sends out a plurality of reference lights having wavelengths at which respective Raman gain obtained by the plurality of pumping lights reach peaks or wavelengths close to the above wavelengths, and the control means controls the plurality of pumping lights based on the optical powers of the plurality of reference lights. Thus, it becomes possible to accurately manage the optical power balance of the WDM light and the optical power of the entire WDM light.

摘要翻译： 在根据本发明的一个方面的光传输系统中，为了利用拉曼放大器将来自发射站的WDM光发射到接收站，所述拉曼放大器包括：光放大介质; 产生具有彼此不同波长的多个泵浦光的泵浦光源; 将所述多个泵浦光引入所述光放大介质的光学装置; 以及用于控制所述泵浦光源的控制装置，所述发送站发出多个具有波长的参考光，所述波长使由所述多个泵浦光获得的各拉曼增益达到接近上述波长的波峰或波长，并且所述控制装置控制 基于多个参考光的光功率的多个泵浦光。 因此，可以精确地管理WDM光的光功率平衡和整个WDM光的光功率。

公开(公告)号：US20080080865A1

公开(公告)日：2008-04-03

申请号：US11843084

申请日：2007-08-22

申请人： Shinichirou Muro ,  Hideaki Sugiya ,  Yasushi Sugaya ,  Etsuko Hayashi

发明人： Shinichirou Muro ,  Hideaki Sugiya ,  Yasushi Sugaya ,  Etsuko Hayashi

IPC分类号： H04J14/02

CPC分类号： H04J14/0221 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0212

摘要： The present invention relates to an optical transmission apparatus capable of suppressing a transitional gain variation when a number of signal wavelengths changes, and maintaining communication quality in optical signals. The optical transmission apparatus is provided with an optical power control device that varies light power of light for each wavelength component corresponding to a wavelength channel, the light including signal light and spontaneous emission light; a wavelength arrangement information obtaining unit that obtains arrangement information of the wavelength channel of the signal light; and a control unit that controls the power control device based on the arrangement information obtained at the wavelength arrangement information obtaining unit so that light power of a wavelength component of the signal light and light power of a wavelength component other than the wavelength component of the signal light become substantially equal.

摘要翻译： 光传输装置技术领域本发明涉及能够抑制多个信号波长变化时的过渡增益变动，并维持光信号的通信质量的光传输装置。 光传输装置设置有光功率控制装置，其对与波长信道对应的每个波长分量改变光的光功率，所述光包括信号光和自发发射光; 波长配置信息获取单元，获取所述信号光的波长信道的布置信息; 以及控制单元，其基于在所述波长配置信息获取单元获得的布置信息来控制所述功率控制装置，使得所述信号光的波长分量的光功率和除了所述信号的波长分量之外的波长分量的光功率 光变得基本相等。

公开(公告)号：US07268936B2

公开(公告)日：2007-09-11

申请号：US10761296

申请日：2004-01-22

申请人： Miki Onaka ,  Etsuko Hayashi ,  Yasushi Sugaya

发明人： Miki Onaka ,  Etsuko Hayashi ,  Yasushi Sugaya

IPC分类号： H04B10/18 ,  H01S3/10

CPC分类号： H04B10/291 ,  H04B10/2569

摘要： An object of the present invention is to provide at low cost, a highly functional and small size optical amplifier, which realizes a polarization mode dispersion (PMD) compensation function and an optical amplifying function, with a simple construction. To this end, the optical amplifier of the present invention comprises: a polarization control section that controls the polarization state of input signal light; a PMD generation section that receives the signal light from the polarization control section at a polarization-preserving fiber thereof doped with a rare earth element, and gives a differential group delay between orthogonal polarization mode components of the signal light to perform PMD compensation and at the same time amplifies the signal light; a pumping light supply section that supplies pumping light to the polarization-preserving fiber; a monitoring section that monitors the PMD generation state of the signal light from the PMD generation section, and the like; and a control section that controls the polarization control section and the pumping light supply section based on the monitor results of the monitoring section.

摘要翻译： 本发明的目的是提供一种低功耗和小尺寸的光放大器，其实现了具有简单结构的偏振模色散（PMD）补偿功能和光放大功能。 为此，本发明的光放大器包括：偏振控制部，其控制输入信号光的偏振状态; PMD生成部，其在掺杂有稀土元素的偏振光保留光纤处接收来自偏振光控制部的信号光，并且在信号光的正交偏振模式分量之间给出差分组延迟以执行PMD补偿，并且在 同时放大信号灯; 泵浦光供给部，其向所述偏振光保持光纤供给泵浦光; 监视来自PMD生成部的信号光的PMD生成状态的监视部等， 以及控制部，其基于监视部的监视结果来控制偏振控制部和泵送光供给部。

公开(公告)号：US06441951B1

公开(公告)日：2002-08-27

申请号：US09858509

申请日：2001-05-17

申请人： Tomoto Tanaka ,  Miki Onaka ,  Etsuko Hayashi ,  Yasushi Sugaya

发明人： Tomoto Tanaka ,  Miki Onaka ,  Etsuko Hayashi ,  Yasushi Sugaya

IPC分类号： H01S300

CPC分类号： H01S3/2375 ,  H01S3/06758 ,  H01S3/10015 ,  H01S3/1301 ,  H01S3/1608 ,  H01S3/302 ,  H01S2301/02 ,  H01S2301/04 ,  H04B10/0731 ,  H04B10/0795 ,  H04B10/0797 ,  H04B10/2916

摘要： An object of the invention is to provide an optical amplification apparatus using Raman amplification, which can reliably judge an input interruption of signal light and can shut down the supply of excitation light in accordance with a judged input interruption of the signal light. To this end, the optical amplification apparatus of the present invention comprises an input interruption detection means for detecting a noise light component due to the Raman amplification, and judging an input interruption of the signal light based on the detection result, and further comprises a shut down control means for shutting down supply of the excitation light when an input interruption of the signal light is judged by the input interruption detection means. The input interruption detection means computes the noise light power due to the Raman amplification in accordance with monitored excitation light power, and corrects a threshold value as a judgment reference for an input interruption using the calculation result, and judges an input interruption of the signal light when a monitored value of the input light power to a second optical amplifying means is less than the post-correction threshold value.

摘要翻译： 本发明的目的是提供一种使用拉曼放大的光放大装置，其可以可靠地判断信号光的输入中断，并且可以根据判断的信号光的输入中断来关闭激发光的供给。 为此，本发明的光放大装置包括输入中断检测装置，用于检测由于拉曼放大引起的噪声光分量，并根据检测结果判断信号光的输入中断，还包括关闭 降低控制装置，用于当由输入中断检测装置判断信号光的输入中断时，关闭激励光的供应。 输入中断检测装置根据监视的激发光功率计算由于拉曼放大引起的噪声光功率，并且使用计算结果校正作为输入中断的判断基准的阈值，并且判断信号光的输入中断 当第二光放大装置的输入光功率的监视值小于校正后阈值时。

公开(公告)号：US08064130B2

公开(公告)日：2011-11-22

申请号：US10351340

申请日：2003-01-27

申请人： Masato Nishihara ,  Yasushi Sugaya ,  Etsuko Hayashi

发明人： Masato Nishihara ,  Yasushi Sugaya ,  Etsuko Hayashi

IPC分类号： H04B10/17 ,  H04B10/12

CPC分类号： H04B10/2935 ,  H01S3/06758 ,  H01S3/06775 ,  H01S3/094011 ,  H01S3/10007 ,  H01S3/10023 ,  H01S3/1608 ,  H01S2301/02 ,  H01S2301/04

摘要： It is an object of the present invention to provide an optical amplifier using optical amplification mediums each doped with a rare earth element for increasing amplification efficiency of signal light in S-band and the like. To this end, the optical amplifier is constituted such that, when performing optical amplification for S-band and the like in which a center wavelength of a gain peak in the optical amplification medium is located at an outside of a signal band, a gain coefficient of when a pumping condition of the optical amplification medium is maximum is set so that a parameter η obtained by dividing a minimum value of the gain coefficient in the signal band by a maximum value of the gain coefficient outside of the signal band becomes a previously set value or more, wherein, for example, the parameter η can be increased by controlling a temperature of each of a plurality of EDFs between which gain equalizers are disposed.

摘要翻译： 本发明的目的是提供一种使用各自掺杂有稀土元素的光放大介质的光放大器，用于提高S波段等信号光的放大效率。 为此，光放大器被构成为：当对光放大介质中的增益峰值的中心波长位于信号频带外侧的S波段等进行光放大时，增益系数 当光放大介质的泵送条件最大时，设定参数＆egr; 通过将信号频带中的增益系数的最小值除以信号频带之外的增益系数的最大值而获得的值成为预先设定的值以上，其中，例如参数＆egr; 可以通过控制在其间设置增益均衡器的多个EDF中的每一个的温度来增加。

公开(公告)号：US07813642B2

公开(公告)日：2010-10-12

申请号：US11843084

申请日：2007-08-22

申请人： Shinichirou Muro ,  Hideaki Sugiya ,  Yasushi Sugaya ,  Etsuko Hayashi

发明人： Shinichirou Muro ,  Hideaki Sugiya ,  Yasushi Sugaya ,  Etsuko Hayashi

IPC分类号： H04J14/02

CPC分类号： H04J14/0221 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0212

摘要： The present invention relates to an optical transmission apparatus capable of suppressing a transitional gain variation when a number of signal wavelengths changes, and maintaining communication quality in optical signals. The optical transmission apparatus is provided with an optical power control device that varies light power of light for each wavelength component corresponding to a wavelength channel, the light including signal light and spontaneous emission light; a wavelength arrangement information obtaining unit that obtains arrangement information of the wavelength channel of the signal light; and a control unit that controls the power control device based on the arrangement information obtained at the wavelength arrangement information obtaining unit so that light power of a wavelength component of the signal light and light power of a wavelength component other than the wavelength component of the signal light become substantially equal.

摘要翻译： 光传输装置技术领域本发明涉及能够抑制多个信号波长变化时的过渡增益变动，并维持光信号的通信质量的光传输装置。 光传输装置设置有光功率控制装置，其对与波长信道对应的每个波长分量改变光的光功率，所述光包括信号光和自发发射光; 波长配置信息获取单元，获取所述信号光的波长信道的布置信息; 以及控制单元，其基于在所述波长配置信息获取单元获得的布置信息来控制所述功率控制装置，使得所述信号光的波长分量的光功率和除了所述信号的波长分量之外的波长分量的光功率 光变得基本相等。

公开(公告)号：US07719758B2

公开(公告)日：2010-05-18

申请号：US12320938

申请日：2009-02-09

申请人： Yasushi Sugaya ,  Etsuko Hayashi

发明人： Yasushi Sugaya ,  Etsuko Hayashi

IPC分类号： H01S3/00

CPC分类号： G02B6/264 ,  H01S3/005 ,  H01S3/0078 ,  H01S3/06758 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/2916

摘要： In an optical transmission system according to one aspect of the present invention, for transmitting a WDM light from a transmission station to a reception station, utilizing a Raman amplifier, the Raman amplifier comprises: an optical amplification medium; a pumping light source generating a plurality of pumping lights having wavelengths different from each other; an optical device introducing the plurality of pumping lights to the optical amplification medium; and control means for controlling the pumping light source, the transmission station sends out a plurality of reference lights having wavelengths at which respective Raman gain obtained by the plurality of pumping lights reach peaks or wavelengths close to the above wavelengths, and the control means controls the plurality of pumping lights based on the optical powers of the plurality of reference lights. Thus, it becomes possible to accurately manage the optical power balance of the WDM light and the optical power of the entire WDM light.

公开(公告)号：US07145718B2

公开(公告)日：2006-12-05

申请号：US10929539

申请日：2004-08-31

申请人： Yasushi Sugaya ,  Shinichirou Muro ,  Etsuko Hayashi

发明人： Yasushi Sugaya ,  Shinichirou Muro ,  Etsuko Hayashi

IPC分类号： H01S3/00

CPC分类号： H04B10/294 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/094011 ,  H01S3/094096 ,  H01S3/0941 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/302 ,  H04B10/2916

摘要： In one of control methods of a bidirectional pumping type Raman amplifier according to the present invention, the power of a pumping light supplied to a rare-earth element doped optical fiber is increased or decreased, and a transmission wavelength characteristic of a dynamic gain equalizer is controlled according to a change in a gain wavelength characteristic occurring due to the increase or decrease of the power of the pumping light, to thereby extend a signal light band to either a short wavelength side or a long wavelength side. As a result, it becomes possible to realize a signal light band extension service at a low cost. Moreover, in another control method of the present invention, in a condition where the supply of backward pumping light to the transmission path fiber is shut off, a ratio of a change in the output power of the signal light to a change in the power of the forward pumping light is obtained, and the forward pumping light power is optimized in accordance with this ratio, to obtain a desired level diagram irrespective of a lump loss on the transmission path fiber.

摘要翻译： 在根据本发明的双向泵浦型拉曼放大器的控制方法之一中，提供给稀土元素掺杂光纤的泵浦光的功率增加或减小，并且动态增益均衡器的透射波长特性为 根据由于泵浦光的功率的增加或减少而产生的增益波长特性的变化来控制，从而将信号光带扩展到短波长侧或长波长侧。 结果，可以以低成本实现信号光带扩展服务。 此外，在本发明的另一种控制方法中，在向传输路径光纤供给反向泵浦光的状态被切断的情况下，信号光的输出功率的变化与功率变化的比率 获得正向泵浦光，并且根据该比率优化正向泵浦光功率，以获得期望的电平图，而不管传输路径光纤上的块损耗。